← Percentages in seconds lesson New set →

Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 777 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.25% of 600 =
  2. 2.1% of 280 =
  3. 3.50% of 790 =
  4. 4.1% of 330 =
  5. 5.1% of 260 =
  6. 6.10% of 450 =
  7. 7.20% of 500 =
  8. 8.10% of 220 =
  9. 9.50% of 240 =
  10. 10.25% of 240 =
  11. 11.1% of 290 =
  12. 12.50% of 210 =
  13. 13.15% of 340 =
  14. 14.25% of 540 =
  15. 15.10% of 120 =
  16. 16.10% of 380 =
  17. 17.15% of 870 =
  18. 18.10% of 250 =
  19. 19.15% of 740 =
  20. 20.10% of 570 =
  21. 21.25% of 480 =
  22. 22.20% of 780 =
  23. 23.20% of 380 =
  24. 24.10% of 70 =
  25. 25.1% of 50 =
  26. 26.10% of 190 =
  27. 27.15% of 660 =
  28. 28.50% of 490 =
  29. 29.10% of 300 =
  30. 30.10% of 680 =
  31. 31.5% of 220 =
  32. 32.1% of 550 =
  33. 33.1% of 870 =
  34. 34.10% of 400 =
  35. 35.25% of 500 =
  36. 36.25% of 630 =
  37. 37.50% of 160 =
  38. 38.15% of 230 =
  39. 39.15% of 810 =
  40. 40.10% of 890 =

Answer key

  1. 150
  2. 2.8
  3. 395
  4. 3.3
  5. 2.6
  6. 45
  7. 100
  8. 22
  9. 120
  10. 60
  11. 2.9
  12. 105
  13. 51
  14. 135
  15. 12
  16. 38
  17. 130.5
  18. 25
  19. 111
  20. 57
  21. 120
  22. 156
  23. 76
  24. 7
  25. 0.5
  26. 19
  27. 99
  28. 245
  29. 30
  30. 68
  31. 11
  32. 5.5
  33. 8.7
  34. 40
  35. 125
  36. 157.5
  37. 80
  38. 34.5
  39. 121.5
  40. 89

Free speed calculation lessons, practice and worksheets at talentjr.in/speed-maths